Bosun is an open-source, Go based, MIT licensed, monitoring and alerting system created by Stack Exchange and designed to work with Scollector, OpenTSDB, Logstash, Graphite, and Grafana. It has an expressive domain specific language for evaluating alerts and creating detailed notifications. It also lets you test your alerts against historical data for a faster development experience. The Scollector monitoring agent has a number of built in collectors for various systems and runs on Windows, Linux, Mac, and ARM based systems.

View Bosun On The DevOps Diagram »

Also check out:

The Ultimate DevOps Tool Chest
The DevOps Diagram Generator
DevOps Hot or Not
The Periodic Table of DevOps Tools